Railway-frog.



PATENTED MAY 19, 1908 E. N. STROM.

RAILWAY FROG.

APPLICATION FILED MAR.12.1908.

UNITED STATES PAgTENT OFFICE- EUGENE N. STROM, OF CHICAGO, ILLINOIS ASSIGNOR TO PETTIBONE, WULLIKEN 6: CO., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

RAILWAY-FROG.

Specification of Letters Patent.

Patented May 19, 1908.

Application filed March 12, 1908. Serial No. 420,618.

T 0 all whom it may concern..-

Be it known that I, EUGENE N. 811101, a citizen of the United States, residing at Ohi cage, in the county of Cook and State of Illinois, have invented a new and useful .lmprovement in Railway-Frogs, of which the following is a specification.

My invention relates, particularly, to the so-callec heel-riser in a railway-frog, and my objectis to provide a novel construction thereof which shall materially simplify its manufacture and render it stable and secure in its operative position.

i The element in a railway-frog which is known as the heel-riser is that part which is confined in the tapering space between the rails forming the frog-point to extend inward from the heel-portion of the frog and has its end adjacent to the heel-portion beveled downwardly on its top-surface to gradually guide the wheels of the rollingstock, peripherally concaved by wear, upon the main rails of the frog in a manner to avoid pounding against the said end. A usual construction of the device upon which, more especially, my invention is designed to afford an improvement, consists of a railway T-rail confined in inverted position in the aforesaid space with its flange-portion, beveled as aforesaid on the top of its wider-end, extending between and contacting with the opposing side of the heads of the frogpoint-forming rails, being tapered, as by planing, to conform to the space between them, and with the under side or base of its head-portion formed, as by swaging, to converge at corresponding angles toward its longitudinal center and thus conform to and seat and lit upon the inclined upper surfaces of the inner flanges of the said point-forming rails, with the center of the space between which the apical center of the bottom of said head coincides. The area of bearing-contact with the heads of the two point-forming rails of the edges of the flange of the interposed rail is not sufficiently extensive, because of the relative thinness of the flange, to afford to it stability under the stresses to which it is sub jected in use and the extent of bearing-surface of the head of the inverted rail upon the upper surfaces of the flanges at the opposing sides of the point-forming rails is insufficient to prevent the interposed rail from tipping under the said stresses and tending to spread apart the rails of the frog-point.

My invention overcomes the defects referred to of the described structure by the construction illustrated in the accompanying drawing, in which i Figure 1 shows a plan view of a railwayfrog embodying my improvement; Fig. 2 is an enlarged section on line 2, Fig. l Fig. 3, l a view in end elevation of the heel-riser rail, 1 showing the head and flange in their original condition by dotted representation, and by full lines the condition to which they are reduced for the purpose of my improvement; Fig. 4, a view of the same in side elevation, and Fig. 5, a plan view of the same showing the original transverse dimensions of the head and flanges and the rail-web or neck by dotted lines.

The frog shown, which is represented in Fig. 1 in position on its supporting-ties 6, comprises the usual main rails 7 and 8, the frog-point 9 formed of converging rails with a heel-riser 1O interposed between them, and filling-blocks 11 and 12 in the spaces between the main rails and the point; the parts being securely fastened together at intervals by transverse bolts 13.

The heel-riser 10 is an ordinary T-rail having one end of its head 14 swaged to form the inclined section 15 and expand it to the width between the point-forming rails at the heel of the frog, the sides of the head being planed down to taper them to a fit between the said rails; and the flanges 16 of the heel riser are swaged to reduce them to the conditionillustrated in Fig. 3, wherein their upper sides are horizontal and their under sides converge at similar angles to a central longitudinal apex coincident with the longitudinal center of the rail-neck 17. The bases of the flanges 16 are thus caused to conform to the inclinations of the tops of the inner flanges of the rails forming the frog-point, with the width of which they correspond so as to extend upon them up to the necks of said pointrails, being normally of that width at the end of the inclined section 15 and thence planed along their edges to taper them in conformity to the convergence of the point-forming rails.

The heel-riser, reduced to the described form, is interposed in upright condition into and fastened in its place between the pointforming rails of the frog, seatin upon the full area of the adjacent flanges of those rails and abuttin at their edges against the' necks thereof, whiIe throughout the greater part of its length the full depth of the head 14 finds bearing against the opposing inner sides of the heads of the point-forming rails. Thus the heel-riser finds a stable seat at its flanges by covering such an extensive area of seating-surface, whereby any tipping tendency thereof under stresses against its head are resisted by the necks of the point-forming rails, and tendency to spread the latter under such stresses is resisted by the extensive area of frictional contact between the surfaces of the point-rail flanges and those of the flanges 16.

What I claim as new and desire to secure by Letters Patent is- 1. A heel-riser for a railway-frog, comprising a railway-rail having one end of its head formed with an expanded and inclined sec-. tion, the sides of said head being tapered, and the flanges of said rail being tapered to extend between the necks of the point-forming rails of the frog and conforming on their under side to the seat therefor formed by the upper surfaces of the flanges of said rails.

2. In a railway-frog, a heel-riser comprising a T-rail fitting at its head against and I conforming to the opposing sides of the converging heads of the point-forming rails, the flange of said riser extending between and conforming to the o posing sides of the converging necks of said rails and conforming to and seating upon the opposing flanges of said rails, said riser havirw on one end of its head an expanded and incIined section.

3. In a railway-frog, a heel-riser fitting in the tapering space between the converging rails forming the frog-point, said riser consisting of an upright T-rail having its head expanded and inclined at the heel of the frog and thence ta ered to its 0 posite end to conform to and ear against t e opposing sides of said converging rails, and havmg its flange tapered longitudinally and bent u Wardly to fit against and conform to t e necks of said converging rails and to conform to and seat upon the opposing flanges of said rails.

EUGENE N. STROM. In presence of:

K. M. CORNWALL, R. SoHAEFER. 

